Find the average value of the following function over the given interval. Draw a graph of the function and indicate the average value. 5 f(x) = x 2 + 1 ; [- 1,1] 5 The average value of the function f(x) = x 2 + 1 on the interval [ - 1, 1] is f = . (Simplify your answer. Use integers or fractions for any numbers in the expression. Type an exact answer, using it as needed.) Choose the correct graph of f(x) with the correct average value f below. O A. O B. O C. OD. Ay AY X A f(x)